Stop motion mechanism foe doubling



(No Model.) 4 Sheets-Sheet 1.

J. 8v T. A. BOYD. STOP MOTION MEOHANISM FOR DOUBLINO, TWISTING, ANDV WINDINO MACHINES.

No. 288,178. Patented 180828, 1882.

4 She'ets-Sheet 2.

(No Model.)

J. & T. A. BOYD. STOP MOTION MEOHANISM FOB. DOUBLING, TWISTING, AND WINDING MACHINES.

NO268,l78.

Patented Nov. 28,1882.

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`(No Model.) 4 Sheets-'Sheet 3.

f J. 8v T. A. BOYD.

STOP'MOTION vMBGHANISM FOR DOUBLING, TWISTING. AND WINDING MACHINES. No. 268 178. Patented Nov. 28.1882.

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(No Model.) 4 Sheets-Sheet 4.

.1.85 T. A. BOYD. STOP MOTION MEGHANISM FOB. DOUBLING, TWISTING. AND WINDING MACHINES. No. 268,178. Patented Nov. 28, 1882.

UNITED STATES JOHN BOYD ANDl THOMAS A; BOYD,

PATENT OEEICE.v

OF GLASGOWT, COUNTY OF LANARK,

SCOTLAND.

SPECIFICATIONOforming part of Letters Patent No. 268,178, dated November 28, 1882.-

Application filed October 27, 1881. (No model.)

To all whom it may concern:

Beitknown that we, JOHN BOYD andTHoMAs ALEXANDER BOYD, of Glasgow, of Lanarkshire, in the Kingdom of Great Britain' and Ireland, have invented a new and uset'ul Ini-Y provement in StopMotion Mechanism for Doubling, Twisting, and Winding Machines, of which the following is a specitcation.

Our invention relates to stop-motions for twisting and Winding and other machines of analogous character; and itconsistsof'improvements in the details otl construction ot' the machinery described in United States Letters Patent granted to John Boyd, June 7, 1881, and July 19, 1881. g

In the accompanying drawings,-Figure l, Sheet l, is a vertical section ot a spinning, twisting, and Winding machine, showing our improvements on opposite sides of the machine, the devices on the left-hand sidev being shown as when the spinning is in progress, While those on the right are shown as when a thread is broken and spinning stopped. Fig. 2, Sheet 2, is an enlarged detached view of our improved stop-motion Fig. 3, a detached view of the stop-rod; Fig. 4, an enlarged plan view on the line a b, Fig. 2, ofthe balance-levers for the detectors, and the thread-guide and starting-lever on the stopfrod Fig. 5, an enlarged sectional view on the line c d, Fig. 2; Fig. 6, an enlarged sectional plan on theline ej', Fig. 2, showing the weighted lever carrying the stopper-rod and the cord-clutching devices; Fig. 7, views of the detectors; Fig. 8, a plan view ot the traverse-bar for the detector-levers, and Fig. 9 a view of a modified form otdetecter mechanism.

As the stop-motion devices on opposite sides of the machine shown in Fig. 1 are precisely alike, a description ot' one will apply tothe other.

Instead ot' mounting the lever which supports the stopper-rod so as to overhang the driving-cord, as vshown in the above-cited patents, the Weighted lever 1, with its tighteningroller 2, Figs. l, 2, and 6, is placed beneath the spindle-driving cord 3. The tighteningroller 2, from its position in the Weighted end of the lever when Working', tightens, guides, and takes the half-twist out ot` the cord 3. Again, when the weighted end of the lever 1 falls, a great amount of slack is given to the driving-cord .3, and the friction of the same ou V fixed, Fig. 2,

the pulley O is reduced to a minimum. The weighted end of the lever has a deep groove for the reception of the roller 2, which is fast on a steel spindle, 2', adapted to chilled bearings formed in the weighted end Ot` the lever 1, which bearings are provided with recesses 22, to hold oil and oil-wick, Fig. 6. The lever 1 is pivoted on the spindle 4', fixed between the sides 4z ofthe bracket 4, and engages, by the spindle 5, fixed in the short end ofthe lever 1, in the loiverjaw 6 of the vertical rod 6. TWO grips, 62, are cast one on each side of the rod 6, being convenient for gripping the spindlei cord 3 ou either side, ith the other grip, 7, which can be fixed and adjusted at will on either side ofthe bracket 4. 1`he grips 62, being in close proximity to the grip 7 on the bracket 4, will, by coming into contact with the said grip 7, keep the rod 6 from twisting round very far to either side, Fig. 6. Farther up on the rod 6 is a small adjustable bracket, S', to which is jointed a lever, 8, carrying the thread-hook 83, and adapted to be used as a starting-lever. The inner end, 82, of the start ing-lever 8 catches on the under edge of the main top rail, 16, and when the rod 6 rises the front end of the starting-leverSis raised, which makes it convenient to remove the bobbin from the twist-spindle. Again, by depressing the starting-lever Sthrough theshort inner end, S2, acting on the edge ofthe rail 16, great power is obtained to depress the rod 6 against the counter-Weight 1 tot put the parts into working action.

On the arm 63 ot' the rod 6 a bracket, 9', is

lever, 9, having anadj ustable helix-weight, 92, to give the requisite counter-Weight. A projection, 93, Figs. 4 and 5, on the arm 63 keeps the inner end, 94, .ot' the balance-lever 9 at the proper distance from the cam 10.

Detectors 11, varying in number according to the num ber of strands which are being twisted into one thread or cord, are held in the traverse-bar 12, which has a reciprocating mo tion imparted to it by the ordinary traverse motion, as described, for instance, in the Patent No. 217,769, July 22, 1879. The object of this is to prevent the yarns wearing rnts on the feed-rollers, which would be the case it' the detectors were stationary. Vihen any one ot' the detectors 11 falls on the Wide plate 95 ot' the lever 9, Figs. 2 and 4,' it depresses the latwhich sustains a counterbalanced 2 Y 26ans ter till it falls onto the rest 9", Fig. 5, formed on the inner end ofthe arm 63. The end 94 ot' the lever 9, coming into the path of the cam 10, the latter presses it against the resistance of a spring, 13, which connects the hooked ends ofthe arms 63 of the rods 6 on each side ot the machine. The rod Gis thus pushed over until the catch-plate 14 on the rod 6 is disengaged from the catch-plate 15 on the main top rail, 16, when the counter-weight 1 will raise the rod, and with it will raise the upper roller, 1), clear of the feed-rollers N and stop the feed. At the same time thelever 1,i'alling.leaves the cord 3 slack, so that the spindle C will cease to rotate.

In the modification, Fig. 9, detector-triggers 17 are pivoted to a carriage, 17, on the arm 63 of the rod 6, the threads to be twisted being passed through hooks 172, carried upward from the trigger' 17', and when any strand breaks its detector is acted on inthe same way by the y cam 10 to disengage the catch-plates 14 and 15,

-iu lfig. 7.

as will bereadily understood. The rod 6, when lifted, raises the detector-triggers or counterbalancefl lever clear ot' the revolving cam 10.

rl`he plate 18 on top ot' the rod 6 is formed with projections 1S' at each end, on which the top roller, 1?, rests when lifted, leavingaclear space for the threads which are being twisted, and on one end of the plate 18 is a vertical-end, 182, Fig. 3,'to keep adjacent rollers separate and in'their own places.

The detectors 11, which are used in the traverse-bar12, are made of thin ilatsteehasshown Stoneware'eyes 11 areheld ina curl formed at one end, and two small stoppins, 112, are iixed in proper position to prevent the detectors from being pulled out of the guide-plates 12 122 122, Figs. 2 and 8, by the strain ot' the threads, or falling too far down when an end breaks ort'ails. Theguide-plates 12 on the top of the bar 12 are formed by cutting the requisite number of slits 125 in one edge at respective distances immediately above the plate 95 of the balance-lever 9, on which they are to act. Corresponding wider slits, 126, Fig. 2, are also i'ormed in the traverse-bar 12, and the plate l23 on the under side of the bar has also slits for the detectors. A second parallel plate, 122, on the top of the bar 12 is made to swing forward on links 122, Fig. S, so that it can be moved back from the plate 12 to permit the taking out or putting in of detectors, as may be required. rllhis swinging plate 122 is made to act for one or more adjacent sets ot" detectors in the length of a machine, and is held in position, when closed, by a pin, 127. 'Ille plate 123 on the under side of the bar 12, Fig. 2, is made by preference with slits wide at each end, and narrow in the center.

The cam 10 and feedrollers may have rotary motion imparted to them from the shaft of the pulley O in any suitable manner, although we prefer the arrangement of gearing shown by dotted lines in Fig. 1, and which will be readily understood without further explanation.

We claim as our invention- 1. The combination of the driving-cord, rod 6, catches for retaining the latter, and devices,substantially as described, for releasing the rod from the said catches, with a Weighted lever supporting said rod, and carrying a roller at its weighted end adapted to bear on the under side ot' the driving-cord, all substantially as set forth.

2. rIhe combination ot" the frame, spinningspindle, a rod, 6, and devices,substantially as described, for stopping said spindle, with a lever, S, pivoted to said rod, and having an arm bearing on a portion ot' the frame,whereby the said lever may operate the rod to throw the spindle into operation, all substantially as specitied.

3. The combination of the frame, feed-rollers, and rod 6, carrying one of the feed-rollers for the thread, with a lever, 8, pivoted to said rod 6, and having an arm bearing on a portion ofthe frame, whereby the said lever may operate the rod to bring the feed-rollers into contact, substantially as described.

4. The combination ot' the fratrie, a rod, 6, catches for said rod, and devices, substantially as described, for releasing it from said catches, with a lever, S, pivoted to said rod, and carrying the front thread-guide and bearing on a portion ot' the frame, as and for the purpose set forth.

5. The combination ot' the frame, a movable rod, 6, having an arm, 63, and detector-levers mounted on said arm, with catches for retaining said rod, and a cam and operating mech- IOC anism for releasing the rod from the Vcatches when the detector-lever falls, substantially as set forth.

6. The combination of the frame, a weighted lever, 1, movable rod 6, having` an arm 62, and detector-levers pivoted thereto, and retainingcatches for the rod, with a revolving cam, 10, adapted to act on the end ot' a detector-lever when a thread breaks and release the rod, substantially as set forth.

7. The stop-rod 6, having at its upper end IIO a plate, with projections land avertical end,

182, substantially as specitied.

S. The combination of detector-levers, a traverse-bar, and operating mechanism, with detectors mounted in said traverse-bar, substantially as described.

9. A detector consisting ot a strip of metal having a stoneware eye at one end and stoppins formed on the side, substantially as set forth.

10. The combination ot a bar,12, and slit guide-plates 12', with detectorsand retainingstrip 122, substantially as set forth.

In testimony whcreot' we have signed our names to this specitcation in the presence of two subscribing witnesses.

JOHN BOYD. THOMAS IALEXR. BOYD.

Witnesses:

RoBnRT BRRY, JAMES URIE. 

